Notes - Ebyte E840-DTU User Manual

GPRS
AT+EBTIOT
Function： Set/query the ebyte IoT platform.
Format： Query
TX：AT+EBTIOT <CR>
return：<CR><LF>+OK=<ctrl><CR><LF>
Set
TX：AT+EBTIOT =<ctrl><CR>
return：<CR><LF>+OK<CR><LF>
Parameter: ctrl
Note: After the Internet of Things cloud function is turned on, the module is automatically connected to the Ebyte IoT platform, ignoring the
sock configuration, registration package, and heartbeat package Function.
AT+CSQ
Function： Query signal strength
Format： Query
TX AT+CSQ<CR><LF>
return <CR><LF>+OK=<csq><CR><LF>
parameter： csq signal strength
Description： None
AT+CREG
Function： Check if it is registered to the carrier.
Format： Set
TX AT+CREG<CR><LF>
Return <CR><LF>+OK=<creg><CR><LF>
Parameter： creg
1
2
Description： None
AT+CPIN
Function： Query SIM status
Format： Set
TX AT+CPIN<CR><LF>
return <CR><LF>+OK=<cpin><CR><LF>
Parameter： cpin
1 SIM card detected
0 SIM card not detected
Description： None

7. Notes

After the module is powered on, it will be automatically initialized. After the initialization is successful, it will automatically establish a connection with the

configured network server. After the connection is successful, the NET light will be on. If the NET light has been flashing slowly, the module is initialized
successfully, but it has been unable to communicate with the server. In this case, check whether the module network server parameter configuration is
correct.
 After the module is powered on, it cannot be initialized successfully. After a short time, the NET light flashes quickly. At this time, check whether the module is
installed properly, whether the SIM card is properly inserted, whether the SIM has failed, and whether the module radio antenna is properly connected.
Copyright ©2012–2017, Chengdu Ebyte Electrical Technology Co., Ltd.
14
IoT Function Switch, 0 off / 1 on.
Network registered
Network not registered
E840-DTU（GPRS-03）User Manual